Bed frame



FIG. 1 is a front view showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a front and side perspective view thereof including a mattress;

FIG. 4 is a top, front and side perspective view;

FIG. 5 is a bottom view;

FIG. 6 is a top view including a cover; and,

FIG. 7 is a top view.

The broken lines in the figures illustrate environmental subject matter and form no part of the claimed invention. 

CLAIM I claim, the ornamental design for a bed frame, as shown and described. 